Process of making metallic barrels.



D. B. GALBALLY. PROCESS OF MAKING METALLIC BARRELS.

- APPLICATION FILED JUNE 24, 1912. 1,054, Patented Feb. 25, 1913.

UNITED STATES PATENT OFFICE.

DAVID B. GALBALLY, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE STEEL PA CKAGE COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, A- COB- PORATION.

PROCESS OF MAKING METALLIC BARRELS.

Specification of Letters Patent. Patented Feb. 25, 1913,

Application filed June 24, 1912. Serial No. 705,631.

To all whom it may concern Be it known that I, DAVID B. GALBALLY, a citizen of the United States, residing at New York, in the county of New York and State v of New York, have invented certain new and useful Improvements in Processes of Making Metallic Barrels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a method of making metallic. barrels from individual flat stave pieces, and has for its object to provide a series of steps by which a strong liquid tight bilge barrel can be made without rendering it necessary to employ expensive resses or other heavy machinery for dislimg or curving the staves.

0 these ends the invention consists in the novel steps and combinations of steps more fully hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views: Figure 1 is a diagrammatic view,

illustrating a pair of flat staves placed edge to edge preparatory to being curved to shapef*'Fig. 2 is a view similar to Fig. 1, illustrating the operation of forcing the locking ji'strip over the meeting edges of the staves in order to simultaneously curve them to shape. Fig. 3 is an enlarged sectional view, in perspective, of the joint formed between the staves. Fig. 4 is a view similar to Fig. 3, but illustrating the flanged head portion 5 is a top plan View of the barrel with the head removed, and Fig. (Sis a longitudinal sectional view of a completed barrel employing my joint.

In order that my method of making a strong and tight joint While at thesame time curvin the staves, may be clearly understood, it is said :1 indicates flat staves cut from flat metal sheets by any suitable means. These staves are provided along their ends with the offset flanges 2, providing the seats 3 for the head 4:, and have along their longitudinal edges the locking flanges formed by turning up saidedges. by any suitable means, so that each, when in the position shown in Fig. 3 will be composed of a vertical member bind them together and of the barrel. Fig. 7

' said lockin g 5, a horizontal member 6, a second vertical member 7 and a second horizontal member 8.

In order to firmly lock the flanges of two ad acent staves together, I provide the lockmg strip 22, formed from a single flat piece of metal so bent upon itself that one edge, when in the position illustrated in Fig. 3, forms the horizontal member 9, fitting between the body of the staves and the first horizontalmember 6 of its locking flange. Said locking strip '22 is further so bent as to provide the vertical member 10 extending at right angles to the member 9, and extending parallel to the member 7 of the locking flange when in contact therewith. The said locking strip is further bent so as to provide the second horizontal member 11, extending at right angles to the member 10, and bent again at right angles to the said second horizontal member 11 to form the second vertical member 12, and then bent at right angles to the said second vertical member 12 to form the third horizontal member 13. After being bent at right angles to form the third horizontal member 13, as above described, the material of the said locking strip 22 is next bent flat back upon itself to form the fourth horizontal member 14, which extends twice the length of the said third member 13, whereupon it is again bent flat upon itself to form a fifth horizontal member 15, and then at right angles to the member 15 to form a third verticalmember 16. From the member 16 the material of the locking strip 22 extends at right angles to form the sixth horizontal member 17, and then atright angles to the member 17 to form the fourth vertical member 18, and finally at right angles to the member 18 to form the seventh horizontal member 19, which constitutes the other edge of the said locking strip 22.

In forming the locking flanges on the staves 1, the first vertical members 5 are made of a length just suflicient to cause the first horizontal members 6 to be located a distance away from the body of the. stave 1 to form recesses for the snug, accommodation of the horizontal members 9 and 19 of thelo'cking strip 22, while the spaces left on flanges between the horizontal members 6 and 8 are just suflicient to snugly accommodate the parallel bent members 13 and 14, and 14 and 15, respectively, of the locking strip. Further, the vertical memcan:

, are put on.

here 12 and 16 of the locking strip are chosen of proper dimensions to afford recesses adapted to snugly accommodate the horizontal members 8 of the locking flanges. It results from the structure ust disclosed that when the parts are in the positions indicated in Fi g. 3, each member of the locking'flanges is inclosed by one or more members of the locking strip 22,, and that while the vertical members .5 of two adjacent flanges are brought into contact to form a. tight joint at 20, the members 13, 1% and 15 constitute a flrm brace or stiffening rib which causes said joint'to effectually resist strains of all kinds that may be brought upon the finished barrel.

Further it will be observed that the staves 1 are out out of flat material with curved edges, as shown. It therefore follows that if their curved edges are brought together as illustrated in Fig. 1, the said edges cannot meet in the plane indicated by the dotted line 21, unless the bodies of said staves are curved into a concavo convex shape. But it is further evident, on the other hand, that if the said edges are brought together, as illustrated in Fig. 2, and the locking strip 22 driven or otherwise forced into the position as shown in Figs. 3 to 6, then the curved edges of said flat staves 1 will be forced to meet in a plane such as 21, and the body portions of said staves will thereupon be forced to assume a concave-convex shape as a result of said driving action. Further, the flexing of the stave bodies, in the manner indicated, results in a wedging action between the parts, as well as in a setting up *of stresses in the metal, causing the interlocking members of the stave flanges and locking strip to be put under a tension. It follows, as a result of the complex tensioning strains thus set up, that a joint 20 of extraordinary tightness and stability is produced. In ad dition to the above, this joint or Scam 20, is bridged by the tightly fitting, longitudinally curved, bracing member let, which further insures against leakage.

The entire construction offers no edges which can be broken by bending 0r twisting while rolling the. barrel, and it is found in practice to be the strongest part of the barrel. The locking pieces 22, after being driven home, are out off even with the seats 3, at each end of the barrel, and their ends form additional supports for the heads 4.

It will also be observed that the longitudinally curved members 1 1 of the locking pieces 22, which bridge the seam 20. being located on the inside of the transversely and longitudinally curved staves, acts somewhat like the keystone of an arch, and prevents the staves from shifting after the hoops 24 It will be seen that by first; cutting, the staves out of flat material with properly curved longitudinal edges, I do away with nos moo the I10CQF ity of employing expensive machinery to curve the staves, for my whole process can either be carried out by hand or with the aid of light, and comparatively inexpensive machinery. The necessary curve on the edges of the staves to form the de sired bilge barrel may be obtained in a variety of ways, but I prefer to simply take a stave from a barrel having the desired shape. flatten out said stave, work out its contour in a flat state, and then add sutlicient material to form the locking flanges.

lt is obvious that those skilled in the art may vary the details of my process without departing from the spirit thereof, and therefore I do not wish to be limited to the above disclosure except as may be required by the claims.

lVhat I claim is 1. The process of making metallic bilge barrels from individual staves and scaling the seams between said staves which consists in providing flat staves with curved longi tudinal gcs; forming on said edges curved locking flanges each having an outer and an inner recess opening in opposite directions; abutting together the ends of two opposing flanges with their inner recesses in register; providing a locking strip having opposing edges adapted to enter the said outer recesses of termcdiate stifl'ening rib adapted to enter the said registering inner recesses and to seal the seam between said flanges; and forcing the said locking strip over and between said flanges thereby causing said curved flanges to meet in a single sealed seam throughout their length and saidstaves to be curved longitudinally and transversely into the contour of said barrel, substantially as described.

'2. The process of curving transversely and longitiu'linall flat metallic staves having curved edges which consists in providing said edges with locking flanges, and then longitudimilly forcing a locking strip over said flanges to cause said flanges to meet throughout their length in a single seam, substantially as described.

3. The process of making a b'lge barrel from individual flat metallic stavcs having curved edges which consists in providing said edges with locking flangesg' causing the ends of opposing flanges to meet; and iongitudinally driving locking strips over and between said opposing flanges until they have met in continuous seams, thereby causing said slaves to curve into the contour of said barrel, substantially as described.

4. The process of making abilge barrel from individual flat metallic staves having curved edges and simultaneously sealing the seams between opposing edges which consists in providing said edges with locking flanges having inner and outer locking recesses; causing the ends of opposlng flanges to consaid opposing flanges, and having an in tact; and longitudinally forcing locking strips over said flanges and insaid recesses until said flanges have met in single sealed seams, substantially as described.

5. The method of forming a liquid tight seam between two metallic staves and simultaneously shaping said staves to the contour of a bilge barrel which consists in suitably forming fiat individual staves each having convexedges; forming locking flanges on sald staves havlng convexouter vertical walls and concave inner vertical walls; abutting a pair of opposite convex walls on said fiat st'aves; and forcing a locking member over said convex inner walls thereby drawing said convex outer walls together from endto end, and simultaneously forcing said staves to'assume the contour of a finished bilge-barrel, substantially as described.

In testimony whereof I aflix my signature, in presence of two witnesses.

DAVID B; GALBALLY. \Vitnesses JAMES H. GEORGE,

RALPH L. DOUGHERTY. 

